Better resolution for engines guide badge image

Found the original that I used.
fix problems from change in markup interpretation

Steam has silently changed the way they handle some of the guide markup.
Inexplicably there now seems to be no way to get a whitespace line
before a section header unless I fake it with an empty list.  Also need
an empty list before inline images for similar reasons.  Finally there's
been a change to the way text flows around inline images, so I need a
blank line after some of them to prevent half the caption from crawling
up over top.

In the "Widescreen" section of the Owner's Manual I also needed to do
some rewriting to get the character count down, so that I could fit the
changes in.  (And the section character limit seems to have been
decreased.)  The editing probably improved it anyway.